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