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