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