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