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