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