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