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