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