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