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