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