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