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