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