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