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