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