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