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