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