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