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