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