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