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