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)(19,23,28,32)(20,25)(21,24)(22,26)(27,30,29,31)(1,3,5,11,6,12,4,13)(2,7,8,10,9,16,14,15)(17,19)(18,23,26,32)(20,29)(21,27)(22,28)(24,30,25,31)(1,2)(3,7)(4,14)(5,8)(6,9)(10,11)(12,16)(13,15)(18,24)(20,21)(23,30)(25,26)(27,29)(31,32) involution — undirected(1,4,6,5)(2,8,9,14)(3,11,12,13)(7,15,16,10)(17,20,22,21)(18,25,26,24)(19,27,28,29)(23,30,32,31)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.