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