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