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