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