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