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