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