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