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