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