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