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