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