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