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