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