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