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