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