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