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