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