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