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