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