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