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