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