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)(11,13)(12,15)(14,16)(17,18)(19,23)(20,22)(21,24)(26,29)(27,31)(1,3,5,4)(2,6,8,7)(10,11)(14,15)(17,18,20,22)(19,21,24,23)(25,26,28,29)(27,30,31,32)(9,10,13,11)(12,14,16,15)(17,19)(18,21)(20,24)(22,23)(1,4,5,3)(2,7,8,6)(9,11,13,10)(12,15,16,14)(17,18)(19,21)(20,22)(23,24)(1,2)(3,6)(4,7)(5,8)(9,12)(10,14)(11,15)(13,16)(17,19)(18,21)(20,24)(22,23)(25,27)(26,30)(28,31)(29,32) involution — undirectedA 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.