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