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