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