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