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