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