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