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