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