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