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