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