One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,6)(3,7,8,4)(9,10,13,14)(11,12,15,16)(19,25)(20,27)(23,28)(24,29)(33,34)(35,38)(36,41)(37,40)(39,43)(42,45)(44,47)(46,48)(1,3)(2,4)(5,8)(6,7)(10,14)(11,15)(18,22)(23,28)(24,29)(30,32)(34,35)(36,43)(40,42)(44,48) involution — undirected(1,4,5,7)(2,3,6,8)(9,11)(10,12)(13,15)(14,16)(17,18,21,22)(19,23,25,28)(20,24,27,29)(26,30,31,32)(33,35,38,34)(36,41,43,39)(37,40,45,42)(44,46,48,47)(1,2)(3,4)(5,6)(7,8)(17,19,21,25)(18,23,22,28)(20,26,27,31)(24,30,29,32)(33,36)(34,39)(35,41)(37,44)(38,43)(40,46)(42,47)(45,48)(1,4)(2,3)(5,7)(6,8)(9,12)(10,15)(11,14)(13,16)(17,20)(18,24)(19,26)(21,27)(22,29)(23,30)(25,31)(28,32)(33,37,38,45)(34,40,35,42)(36,44,43,48)(39,46,41,47)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.