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