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