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