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