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