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