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