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