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