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