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