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