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