\documentclass{standalone}
\usepackage[paperwidth=\maxdimen,paperheight=\maxdimen]{geometry}
\usepackage{pgf,tikz}
\begin{document}

\begin{tikzpicture}[x=24pt, y=24pt, draw=white, double=black, line width=2.1pt]
	\node (1) at (0, 0) {$1$};
	\node (4) at (20, 0) {$4$};
	\node (3) at (48, 0) {$3$};
	\node (2) at (68, 0) {$2$};

	\draw[double=white,draw=blue] (4) -- (20, -28) -- (94, -28) -- (94, 1) -- (67, 1) -- (67, -10) -- (47, -10) -- (47, 24) -- (0, 24) -- (1);
	\draw[double=white,draw=red] (2) -- (68, -12) -- (46, -12) -- (46, 13) -- (19, 13) -- (19, -29) -- (95, -29) -- (95, 13) -- (48, 13) -- (3);
	\draw[double=blue] (3) -- (48, -21) -- (87, -21) -- (87, 40) -- (7, 40) -- (7, -12) -- (32, -12) -- (32, 15) -- (62, 15) -- (62, -5) -- (73, -5) -- (73, 26) -- (22, 26) -- (22, -2) -- (17, -2) -- (17, 30) -- (77, 30) -- (77, -9) -- (58, -9) -- (58, 10) -- (36, 10) -- (36, -16) -- (3, -16) -- (3, 44) -- (91, 44) -- (91, -25) -- (42, -25) -- (42, 4) -- (52, 4) -- (52, -17) -- (83, -17) -- (83, 36) -- (11, 36) -- (11, -8) -- (28, -8) -- (28, 19) -- (66, 19) -- (66, -1) -- (69, -1) -- (69, 21) -- (26, 21) -- (26, -6) -- (13, -6) -- (13, 34) -- (81, 34) -- (81, -15) -- (54, -15) -- (54, 6) -- (40, 6) -- (40, -27) -- (93, -27) -- (93, 46) -- (1, 46) -- (1, -18) -- (38, -18) -- (38, 8) -- (56, 8) -- (56, -13) -- (79, -13) -- (79, 32) -- (15, 32) -- (15, -4) -- (24, -4) -- (24, 23) -- (71, 23) -- (71, -3) -- (64, -3) -- (64, 17) -- (30, 17) -- (30, -10) -- (9, -10) -- (9, 38) -- (85, 38) -- (85, -19) -- (50, -19) -- (50, 2) -- (44, 2) -- (44, -23) -- (89, -23) -- (89, 42) -- (5, 42) -- (5, -14) -- (34, -14) -- (34, 12) -- (60, 12) -- (60, -7) -- (75, -7) -- (75, 28) -- (20, 28) -- (4);
	\draw[double=red] (1) -- (0, -19) -- (39, -19) -- (39, 7) -- (55, 7) -- (55, -14) -- (80, -14) -- (80, 33) -- (14, 33) -- (14, -5) -- (25, -5) -- (25, 22) -- (70, 22) -- (70, -2) -- (65, -2) -- (65, 18) -- (29, 18) -- (29, -9) -- (10, -9) -- (10, 37) -- (84, 37) -- (84, -18) -- (51, -18) -- (51, 3) -- (43, 3) -- (43, -24) -- (90, -24) -- (90, 43) -- (4, 43) -- (4, -15) -- (35, -15) -- (35, 11) -- (59, 11) -- (59, -8) -- (76, -8) -- (76, 29) -- (18, 29) -- (18, -1) -- (21, -1) -- (21, 27) -- (74, 27) -- (74, -6) -- (61, -6) -- (61, 14) -- (33, 14) -- (33, -13) -- (6, -13) -- (6, 41) -- (88, 41) -- (88, -22) -- (45, -22) -- (45, 1) -- (49, 1) -- (49, -20) -- (86, -20) -- (86, 39) -- (8, 39) -- (8, -11) -- (31, -11) -- (31, 16) -- (63, 16) -- (63, -4) -- (72, -4) -- (72, 25) -- (23, 25) -- (23, -3) -- (16, -3) -- (16, 31) -- (78, 31) -- (78, -11) -- (57, -11) -- (57, 9) -- (37, 9) -- (37, -17) -- (2, -17) -- (2, 45) -- (92, 45) -- (92, -26) -- (41, -26) -- (41, 5) -- (53, 5) -- (53, -16) -- (82, -16) -- (82, 35) -- (12, 35) -- (12, -7) -- (27, -7) -- (27, 20) -- (68, 20) -- (2);
\end{tikzpicture}
\end{document}