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