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)(19,27,22,24)(20,21,26,32)(28,29,30,31)(33,34,39,38)(35,43,45,40)(36,41,44,46)(37,42,47,48)(1,3)(2,6)(4,11)(5,10)(7,9)(8,14)(12,15)(13,16)(17,19,23,22)(18,24,25,27)(20,28,26,30)(21,31,32,29)(33,35,39,45)(34,40,38,43)(36,37,44,47)(41,48,46,42)(3,10)(6,7)(11,16)(14,15)(18,25)(20,26)(24,27)(28,30)(33,36,39,44)(34,41,38,46)(35,37,45,47)(40,48,43,42)(1,3)(2,7)(4,11)(5,10)(6,9)(8,15)(12,14)(13,16)(17,20)(18,21)(19,28)(22,30)(23,26)(24,31)(25,32)(27,29)(33,36)(34,41)(35,37)(38,46)(39,44)(40,48)(42,43)(45,47) involution — undirected(1,2)(3,6)(4,12)(5,9)(7,10)(8,13)(11,15)(14,16)(17,21)(18,26)(19,29)(20,25)(22,31)(23,32)(24,28)(27,30)(33,37)(34,42)(35,44)(36,45)(38,48)(39,47)(40,41)(43,46) involution — undirected(1,4)(2,8)(3,11)(5,13)(6,14)(7,15)(9,12)(10,16)(17,22,23,19)(18,27,25,24)(20,30,26,28)(21,29,32,31)(33,38,39,34)(35,43,45,40)(36,46,44,41)(37,42,47,48)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.