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