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