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