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