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