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