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