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