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