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