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