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