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