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