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