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