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