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