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