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