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