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