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