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