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