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