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