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