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)(11,15)(12,16)(13,14)(17,18)(19,23)(20,21)(22,24)(25,26,29,32)(27,30,28,31)(2,3)(6,7)(10,14)(11,16)(17,19,21,24)(18,22,20,23)(25,26,29,32)(27,30,28,31)(4,8)(6,7)(10,14)(12,15)(18,20)(22,23)(25,26)(27,30)(28,31)(29,32) involution — undirected(1,3,5,2)(4,7,8,6)(9,11)(10,15)(12,14)(13,16)(17,19)(18,22)(20,23)(21,24)(25,27,29,28)(26,30,32,31)(1,4)(2,6)(3,7)(5,8)(9,12,13,15)(10,11,14,16)(17,20,21,18)(19,23,24,22)(25,28,29,27)(26,31,32,30)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.