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