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