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