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