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