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