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