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)(15,19)(16,17)(18,20)(21,22,27,32)(23,29,33,36)(24,28,34,35)(25,31,26,30)(1,2)(3,4)(6,9)(10,12)(21,23,26,34,27,33,25,24)(22,28,31,36,32,35,30,29)(2,4)(5,7,8,11)(6,10,9,12)(14,17)(18,19)(21,24,25,33,27,34,26,23)(22,29,30,35,32,36,31,28)(13,15,16,20)(14,18,17,19)(23,33)(24,34)(28,35)(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.