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