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