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