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