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