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