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