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