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