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