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