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