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