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