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