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