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