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