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