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