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