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)(11,17)(13,18)(16,20)(21,22,25,29)(23,26,30,35)(24,32,34,28)(27,33,36,31)(1,2)(3,4)(5,7,10,16)(6,11,14,12)(8,18,17,9)(13,20,19,15)(21,23)(22,26)(24,31)(25,30)(27,32)(28,36)(29,35)(33,34)(2,4)(5,8,9,7,10,17,18,16)(6,12,13,20,14,11,19,15)(21,23)(22,27)(24,33)(25,30)(26,32)(28,35)(29,36)(31,34)(7,16)(8,17)(11,12)(15,20)(23,30)(26,35)(27,36)(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.