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