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