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