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