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