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