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