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