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