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