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