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