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