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