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