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