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)(13,17)(14,18)(15,19)(16,20)(21,22,27,29)(23,30,33,31)(24,26,34,25)(28,35,36,32)(2,4)(5,7)(6,10)(8,15)(9,13)(11,19)(12,17)(14,16)(18,20)(21,23,26,32,27,33,25,35)(22,28,24,30,29,36,34,31)(7,13)(10,17)(14,15)(18,19)(21,24,26,29,27,34,25,22)(23,31,32,28,33,30,35,36)(5,8,9,16)(6,11,12,20)(7,14,13,15)(10,18,17,19)(21,25,27,26)(22,24,29,34)(23,32,33,35)(28,31,36,30)(6,12)(10,17)(11,20)(18,19)(22,29)(24,34)(28,36)(30,31) 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.