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