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