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