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