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