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