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