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