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