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