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