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