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