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