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