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