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