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