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