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