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