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