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