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