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