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