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