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