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