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