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