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