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