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