One vertex per element, one color per generator, with an edge from x to x·s.
(5,6,9,13)(7,11,14,18)(8,10,16,12)(15,17,20,19)(23,29)(24,31)(26,34)(28,32)(30,33)(35,36)(1,2)(3,4)(6,10)(8,16)(11,17)(12,13)(15,20)(18,19)(21,22)(23,26)(24,32)(25,27)(28,31)(29,36)(30,35)(33,34) involution — undirected(2,4)(5,7,9,14)(6,11,13,18)(8,15,16,20)(10,17,12,19)(21,23)(22,26)(24,33)(25,30)(27,35)(28,36)(29,31)(32,34)(7,14)(11,18)(15,20)(17,19)(22,27)(23,30)(28,32)(29,33) 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.