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