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