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