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