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