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