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