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