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