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