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