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