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