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