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