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