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