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