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