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