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