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)(17,18,20,24,21,23,29,31)(19,25,27,30,26,32,28,22)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(19,26)(22,30)(25,32)(27,28) involution — undirected(1,2,5,4)(3,6,8,7)(9,11)(10,13)(12,16)(14,15)(17,19,21,26)(18,22,23,30)(20,28,29,27)(24,32,31,25)(1,2,5,4)(3,7,8,6)(11,16)(13,15)(19,26)(22,30)(25,32)(27,28)(1,4,5,2)(3,7,8,6)(10,14)(13,15)(18,23)(22,30)(24,31)(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.