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