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