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