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