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