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