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