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