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