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