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