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