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