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