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