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