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