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