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