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