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