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