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