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