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