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