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