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