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