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