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