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