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