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