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