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