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