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