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