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