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