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