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