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