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