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