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