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