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