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