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