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