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