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