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