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