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