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