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