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