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