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