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