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