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