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