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