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