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