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