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