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