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