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)(21,22,24,29,26,30,25,27)(23,31,33,28,32,35,34,36)(5,7,8,12)(6,9,10,11)(13,14)(15,18)(16,17)(19,20)(22,27)(24,25)(28,35)(29,30)(31,36)(33,34)(14,17)(18,20)(21,23,26,32)(22,28,30,36)(24,34,25,33)(27,35,29,31)(2,4)(13,15,16,19)(14,18,17,20)(23,32)(28,36)(31,35)(33,34)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.