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