\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 (2) at (1, 0) {$2$};
	\node (5) at (13, 0) {$5$};
	\node (1) at (23, 0) {$1$};
	\node (4) at (28, 0) {$4$};
	\node (3) at (40, 0) {$3$};
	\node (6) at (45, 0) {$6$};

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