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