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