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