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