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)(19,28)(20,21)(22,26)(23,27)(24,31)(25,30)(29,32)(1,2)(3,7)(4,8)(5,6)(9,10,13,16)(11,12,15,14)(17,19)(18,24)(20,29)(21,26)(22,30)(23,31)(25,32)(27,28)(1,2)(3,7)(4,8)(5,6)(9,11)(10,14)(12,16)(13,15)(17,20,23,30)(18,21,27,25)(19,29,31,22)(24,26,28,32)(2,6)(4,7)(9,12,13,14)(10,15,16,11)(17,20)(18,25)(19,29)(21,27)(22,31)(23,30)(24,32)(26,28)(1,3)(2,7)(4,6)(5,8)(9,11)(10,12)(13,15)(14,16)(17,21,23,25)(18,20,27,30)(19,26,31,32)(22,24,29,28)(1,4,5,7)(2,8,6,3)(9,12)(10,15)(11,16)(13,14)(17,22,23,29)(18,26,27,32)(19,30,31,20)(21,28,25,24)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.