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