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