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