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