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