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