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