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