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