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