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