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