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