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