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