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