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