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