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)(21,22,27,35,26,29,25,24)(23,30,36,28,33,34,32,31)(5,7)(6,10)(8,15)(9,14)(11,19)(12,18)(13,16)(17,20)(21,23,26,33)(22,28,29,31)(24,34,35,30)(25,36,27,32)(2,4)(5,8,9,16)(6,11,12,20)(7,13,14,15)(10,17,18,19)(22,29)(24,35)(28,31)(30,34)(8,16)(11,20)(13,15)(17,19)(21,24,25,29,26,35,27,22)(23,31,32,34,33,28,36,30)(6,12)(7,14)(11,20)(13,15) 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.