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