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