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