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