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