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