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