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