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