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