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