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