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