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