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