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