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