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