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