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