\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 (6) at (0, 0) {$6$};
	\node (3) at (4, 0) {$3$};
	\node (5) at (14, 0) {$5$};
	\node (4) at (32, 0) {$4$};
	\node (1) at (40, 0) {$1$};
	\node (2) at (55, 0) {$2$};

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