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