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