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