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)(11,15)(12,13)(14,16)(17,18,20,22)(19,21,24,23)(25,26,31,29)(27,32,30,28)(1,2,4,6)(3,5,8,7)(10,13)(11,16)(17,18)(19,23)(20,22)(21,24)(25,27,31,30)(26,32,29,28)(3,8)(5,7)(9,10,12,13)(11,14,16,15)(17,18,20,22)(19,21,24,23)(25,28)(26,30)(27,29)(31,32)(1,3,4,8)(2,5,6,7)(9,10)(11,14)(12,13)(15,16)(17,18)(19,21)(20,22)(23,24)(25,29,31,26)(27,32,30,28)(1,2)(3,5)(4,6)(7,8)(9,11,12,16)(10,14,13,15)(17,19,20,24)(18,21,22,23)(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.