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