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