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