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