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