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