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