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