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