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