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