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