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