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