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