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