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