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