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