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