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