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