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