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