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