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