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