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