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