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