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