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)(17,18,23,24)(19,26,20,21)(22,30,31,25)(27,29,28,32)(9,11,13,15)(10,14,16,12)(17,19,23,20)(18,21,24,26)(22,27,31,28)(25,29,30,32)(1,2)(3,6)(4,5)(7,8)(9,10)(11,14)(12,15)(13,16)(18,24)(19,20)(25,30)(27,28) involution — undirected(17,20,23,19)(18,21,24,26)(22,28,31,27)(25,29,30,32)(17,21)(18,19)(20,24)(22,29)(23,26)(25,27)(28,30)(31,32) involution — undirected(1,3,4,7)(2,6,5,8)(9,12,13,14)(10,15,16,11)(17,22,23,31)(18,25,24,30)(19,27,20,28)(21,29,26,32)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.