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