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