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