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