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