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