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