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)(17,18)(19,21)(20,25)(22,31)(23,24)(26,30)(27,28)(29,32)(2,6)(3,7)(10,13)(11,16)(17,19,23,22)(18,21,24,31)(20,26,29,28)(25,30,32,27)(2,6)(4,8)(9,11,14,16)(10,15,13,12)(18,24)(19,22)(25,32)(26,28)(2,6)(3,7)(9,12)(10,11)(13,16)(14,15)(17,20,23,29)(18,25,24,32)(19,26,22,28)(21,30,31,27)(1,3,5,7)(2,4,6,8)(9,13,14,10)(11,12,16,15)(17,21)(18,19)(20,27)(22,24)(23,31)(25,28)(26,32)(29,30)(1,4)(2,7)(3,6)(5,8)(9,12)(10,11)(13,16)(14,15)(17,22,23,19)(18,21,24,31)(20,28,29,26)(25,30,32,27)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.