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