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