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