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