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