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