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