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