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