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