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