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)(22,27)(23,31)(26,29)(28,35)(32,33)(34,36)(2,4)(5,7)(6,10)(8,14)(9,13)(11,17)(12,16)(15,19)(18,20)(21,22)(23,32)(24,29)(25,27)(26,30)(28,34)(31,35)(33,36) involution — undirected(7,13)(8,15)(10,16)(11,18)(21,23,29,36,25,34,26,31)(22,28,24,35,27,32,30,33)(5,8,9,15)(6,11,12,18)(7,14,13,19)(10,17,16,20)(21,24,25,30)(22,29,27,26)(23,33,34,35)(28,31,32,36)(7,13)(10,16)(14,19)(17,20)(22,27)(24,30)(28,32)(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.