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