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