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