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