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