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