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