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