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