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