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