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