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