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