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