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