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