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