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