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