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