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