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