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