\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 (3) at (0, 0) {$3$};
	\node (4) at (12, 0) {$4$};
	\node (2) at (35, 0) {$2$};
	\node (1) at (47, 0) {$1$};

	\draw[double=white,draw=blue] (4) -- (12, 12) -- (38, 12) -- (38, -10) -- (69, -10) -- (69, 26) -- (1, 26) -- (1, -17) -- (36, -17) -- (36, 1) -- (34, 1) -- (34, -10) -- (10, -10) -- (10, 19) -- (47, 19) -- (1);
	\draw[double=white,draw=red] (2) -- (35, -12) -- (9, -12) -- (9, 25) -- (68, 25) -- (68, -1) -- (46, -1) -- (46, 17) -- (11, 17) -- (11, -1) -- (13, -1) -- (13, 10) -- (37, 10) -- (37, -20) -- (0, -20) -- (3);
	\draw[double=blue] (3) -- (0, 8) -- (21, 8) -- (21, -15) -- (52, -15) -- (52, 5) -- (41, 5) -- (41, -3) -- (31, -3) -- (31, 13) -- (58, 13) -- (58, -23) -- (15, -23) -- (15, 2) -- (7, 2) -- (7, -27) -- (62, -27) -- (62, 18) -- (27, 18) -- (27, -7) -- (45, -7) -- (45, 1) -- (48, 1) -- (48, -9) -- (25, -9) -- (25, 21) -- (64, 21) -- (64, -29) -- (5, -29) -- (5, 4) -- (17, 4) -- (17, -21) -- (56, -21) -- (56, 9) -- (33, 9) -- (33, -1) -- (39, -1) -- (39, 7) -- (54, 7) -- (54, -18) -- (19, -18) -- (19, 6) -- (3, 6) -- (3, -31) -- (66, -31) -- (66, 23) -- (23, 23) -- (23, -13) -- (50, -13) -- (50, 3) -- (43, 3) -- (43, -5) -- (29, -5) -- (29, 15) -- (60, 15) -- (60, -25) -- (12, -25) -- (4);
	\draw[double=red] (1) -- (47, -8) -- (26, -8) -- (26, 20) -- (63, 20) -- (63, -28) -- (6, -28) -- (6, 3) -- (16, 3) -- (16, -22) -- (57, -22) -- (57, 11) -- (32, 11) -- (32, -2) -- (40, -2) -- (40, 6) -- (53, 6) -- (53, -16) -- (20, -16) -- (20, 7) -- (2, 7) -- (2, -32) -- (67, -32) -- (67, 24) -- (22, 24) -- (22, -14) -- (51, -14) -- (51, 4) -- (42, 4) -- (42, -4) -- (30, -4) -- (30, 14) -- (59, 14) -- (59, -24) -- (14, -24) -- (14, 1) -- (8, 1) -- (8, -26) -- (61, -26) -- (61, 16) -- (28, 16) -- (28, -6) -- (44, -6) -- (44, 2) -- (49, 2) -- (49, -11) -- (24, -11) -- (24, 22) -- (65, 22) -- (65, -30) -- (4, -30) -- (4, 5) -- (18, 5) -- (18, -19) -- (55, -19) -- (55, 8) -- (35, 8) -- (2);
\end{tikzpicture}
\end{document}