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