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