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