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