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