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