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