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