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