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