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