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