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