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