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