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