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