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)(17,18)(19,23)(20,24)(21,25)(22,28)(26,31)(27,32)(29,30)(1,3,5,4)(2,6,8,7)(17,18)(19,26)(20,24)(21,30)(22,27)(23,31)(25,29)(28,32)(9,11,12,16)(10,13,14,15)(17,19)(18,22)(20,28)(21,31)(23,24)(25,32)(26,30)(27,29)(1,3,5,4)(2,7,8,6)(19,27)(21,29)(22,26)(23,32)(25,30)(28,31)(1,4,5,3)(2,6,8,7)(17,19)(18,23)(20,28)(21,31)(22,24)(25,26)(27,29)(30,32)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.