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