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)(17,18,23,27)(19,25,20,28)(21,26,22,31)(24,30,32,29)(1,3,4,7)(2,5,6,8)(9,10,13,14)(11,12,16,15)(17,19,23,20)(18,24,27,32)(21,29,22,30)(25,26,28,31)(2,6)(5,8)(9,11)(10,15)(12,14)(13,16)(17,20,23,19)(18,25,27,28)(21,29,22,30)(24,26,32,31)(10,14)(11,16)(17,18)(19,28)(20,25)(21,26)(22,31)(23,27)(24,30)(29,32) involution — undirected(9,12,13,15)(10,11,14,16)(17,21,23,22)(18,26,27,31)(19,29,20,30)(24,28,32,25)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.