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