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