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