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