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