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