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