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