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