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