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)(24,27)(28,32)(29,33)(31,34)(35,36)(5,7)(6,9)(8,11)(10,12)(21,22,27,33,25,29,24,26)(23,28,34,36,30,35,31,32)(1,2,3,4)(7,11)(9,12)(21,23)(22,28)(24,31)(25,30)(26,32)(27,34)(29,35)(33,36)(13,15,16,20)(14,17,18,19)(23,30)(28,35)(31,34)(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.