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