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