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