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