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