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