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