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)(21,22,26,28,25,29,24,30)(23,27,33,34,31,36,32,35)(1,2)(3,4)(5,7,10,8)(6,11,15,20)(9,18,19,17)(12,13,16,14)(21,23)(22,27)(24,32)(25,31)(26,33)(28,34)(29,36)(30,35)(2,4)(5,8,10,7)(6,12,15,16)(9,18,19,17)(11,13,20,14)(22,28)(24,26)(27,34)(29,30)(32,33)(35,36)(6,13)(9,19)(11,16)(12,20)(14,15)(17,18)(22,29)(23,31)(28,30)(32,33) 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.