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