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