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