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