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