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