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