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