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