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