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