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