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)(19,22)(20,25)(21,24)(23,28)(26,29)(27,31)(30,32)(33,34,39,37)(35,42,40,36)(38,41,47,45)(43,46,48,44)(2,7)(4,14)(8,10)(11,16)(18,19)(23,25)(24,26)(30,31)(34,37)(36,42)(41,45)(44,46) involution — undirected(17,18,22,19)(20,23,28,25)(21,24,29,26)(27,30,32,31)(33,35)(34,36)(37,42)(38,43)(39,40)(41,44)(45,46)(47,48)(1,3,6,13)(2,8,7,10)(4,11,14,16)(5,15,9,12)(17,19,22,18)(20,25,28,23)(21,26,29,24)(27,31,32,30)(33,36,39,42)(34,40,37,35)(38,46,47,44)(41,43,45,48)(1,4)(2,9)(3,11)(5,7)(6,14)(8,12)(10,15)(13,16)(17,20)(18,23)(19,25)(21,27)(22,28)(24,30)(26,31)(29,32)(33,37,39,34)(35,42,40,36)(38,45,47,41)(43,46,48,44)(1,5,6,9)(2,4,7,14)(3,12,13,15)(8,16,10,11)(17,21,22,29)(18,24,19,26)(20,27,28,32)(23,30,25,31)(33,38,39,47)(34,41,37,45)(35,43,40,48)(36,44,42,46)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.