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