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)(17,18,19,26,21,25,29,22)(20,30,28,32,31,24,27,23)(1,2)(3,6)(4,8)(5,7)(9,11)(10,13)(12,16)(14,15)(17,19,21,29)(18,22,25,26)(20,28,31,27)(23,24,32,30)(11,16)(13,15)(17,20)(18,23)(19,27)(21,31)(22,30)(24,26)(25,32)(28,29) involution — undirected(1,3,5,4)(2,6,7,8)(10,14)(13,15)(17,20)(18,24)(19,28)(21,31)(22,32)(23,26)(25,30)(27,29)(1,4,5,3)(2,6,7,8)(17,19,21,29)(18,22,25,26)(20,27,31,28)(23,30,32,24)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.