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