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