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