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