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