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