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