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