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