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