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