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