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