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