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