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