One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,6,12,19)(7,20,24,36)(8,22,29,15)(9,31,10,16)(11,34,13,18)(14,25,27,23)(17,32,26,33)(21,28,35,30)(1,2)(3,4)(5,7)(6,14)(8,26)(9,15)(10,22)(11,25)(12,24)(13,23)(16,28)(17,29)(18,36)(19,27)(20,34)(21,32)(30,31)(33,35) involution — undirected(2,4)(5,8,12,29)(6,15,19,22)(7,17,24,26)(9,14,10,27)(11,28,13,30)(16,25,31,23)(18,35,34,21)(20,33,36,32)(2,4)(5,9,12,10)(6,16,19,31)(7,21,24,35)(8,14,29,27)(11,32,13,33)(15,25,22,23)(17,18,26,34)(20,30,36,28)(5,10)(6,17)(7,22)(8,27)(9,12)(11,32)(13,33)(14,29)(15,24)(16,34)(18,31)(19,26)(20,28)(21,25)(23,35)(30,36) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.