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