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