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