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)(17,18)(19,26)(20,30)(21,24)(22,32)(23,25)(27,28)(29,31)(1,3,5,8)(2,6,4,7)(9,10)(11,15)(12,14)(13,16)(17,19)(18,24)(20,31)(21,23)(22,29)(25,26)(27,32)(28,30)(1,4,5,2)(3,7,8,6)(9,11)(10,13)(12,16)(14,15)(17,20,30,18,23,32,22,25)(19,27,28,26,21,31,29,24)(3,8)(6,7)(11,16)(13,15)(17,21,23,19)(18,24,25,26)(20,31,32,27)(22,28,30,29)(10,14)(13,15)(17,22,23,30)(18,20,25,32)(19,28,21,29)(24,27,26,31)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.