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