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