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