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