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