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