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