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