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