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