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