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