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