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