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