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