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